Water thrown on the heater cools the stones quickly.
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Make sure that the fuses/breakers of the heater on the electrical panel are in working order. Please note that there are one to three fuses/breakers on the electrical panel, depending on the heater model and electricity system.
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Check that all the heating elements are glowing when the heater is on.
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Set a higher temperature.
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Make sure that the heater is sufficiently powerful.
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Check the heater stones. If the stones are stacked too tightly, compacted over time or the wrong kind, air circulation in the heater may be blocked, which in turn decreases the heating power.
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Make sure that the ventilation of the sauna is arranged correctly.
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Test whether the thermostat works correctly:
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Remove stones from the heater until you can see the ends of all heating elements.
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Turn the heater on. The heating elements will begin to glow. If a heating element does not glow, it must be replaced. Remember to close the sauna door.
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Monitor when the heating elements turn off. This happens when the sauna temperature has reached the desired temperature set with the thermostat. Usually, the desired temperature will be reached in 35–45 minutes from turning on the heater. If it takes significantly longer to reach the desired temperature, the temperature sensor may be placed incorrectly, the heater may not have enough power, or the thermostat may be faulty.
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